What are the best practices for comparing strings in PHP to avoid case sensitivity issues?

When comparing strings in PHP, it's important to consider case sensitivity issues. To avoid problems with case sensitivity, you can use functions like strtolower() or strtoupper() to convert both strings to the same case before comparing them. 

$string1 = "Hello";
$string2 = "hello";

if (strtolower($string1) == strtolower($string2)) {
    echo "The strings are equal.";
} else {
    echo "The strings are not equal.";
}

Keywords

strcasecmp strcasecmp function case-insensitive comparison strcmp strcmp function

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